Preparation of methacrylic derivatives from tertiary butyl-containing compounds
AssigneeThe Standard Oil Company
InventorsHarley F. Hardman, James L. Callahan, Robert K. Grasselli
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Abstract
The present invention relates to a process for the conversion of tertiary-butyl-containing compounds to methacrylic derivatives, and more particularly to a process for the conversion of tertiary-butyl-containing compounds selected from the group consisting of alkyl tertiary-butyl ethers, tertiary-butyl alcohol, isobutylene dimer (2,2,4-trimethylpentene) and isobutylene trimer, to methacrolein, methacrylic acid or methacrylonitrile.
Claims5
A process for producing methacrolein by the oxidation of a tertiary butyl-containing compound selected from the group consisting of tertiary-butyl alcohol, alkyl tertiary-butyl ether wherein the alkyl group contains from 1 to 4 carbon atoms, isobutylene dimer, isobutylene trimer and mixtures of isobutylene dimer and/or isobutylene trimer with isobutylene, in the presence of molecular oxygen and optionally in the presence of steam, at a temperature in the range of from about 200.degree. to 600.degree. C, and in the presence of a catalyst having the formula:
- A.sub.a C.sub.c Fe.sub.e Bi.sub.f D.sub.d Mo.sub.g O.sub.x
- wherein
- A is an alkali metal, barium, strontium, thallium, indium, silver, copper, or mixtures thereof;
- C is nickel, cobalt, magesium, zinc, manganese, cadmium, calcium, or mixtures thereof;
- D is phosphorus, antimony, germanium, chromium, thorium, tin, niobium, praseodymium, tungsten, boron, zirconium, cerium, arsenic or mixtures thereof;
- and
- wherein
- a is a number from 0 to 3;
- c is a number from 0.001 to 12;
- d is a number from 0 to 3;
- e and f are each a number from 0.01 to 12;
- g is 12;
- and
- x is the number of oxygens required to satisfy the valence requirements of the other elements present.
Dependencies are inferred from the claim text.